In the Vinony graph
It is catalogued under topics including Article message templates, Templates used by Twinkle and Templates using TemplateData.
Its subject is documented across 50 Wikipedia language editions.
~7 min read
Encyclopedic overview
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Use this template to tag information or analysis that you believe is improperly or unnecessarily supported by a primary source, so that other editors can see whether this use is appropriate or replace it with a citation to a secondary or tertiary source.
Excerpted from Wikipedia’s “Template:Primary sources” article, available under the CC BY-SA 4.0 licence.